Fluid Mechanics

1. Explain about the below terminologies.

a.  1 pa ( pressure unit )

b- Lift coefficient 

c- Drag coefficient 

d- Pressure coefficient

e- Mach Number. 

2- Answer about the below questions in detail.

a- why the water in a cup is boiled at the temperature lower than 100 C at high mountain? 

b- The temperature in your room is higher than outside.

when you open the window of your room, the wind of outside coming in. Explain the reason why?